AMT/PTD/PBX/0020/2/4/EN 01/2007 Page 95
Chapter 5 - Implementation of hardware
on NeXspan 50
5.1 Interface card
LDS/LDT cards, possibly fitted with one or two ADPCM32 (LDS) and ADPCM32B (LDT)
daughter cards are used to connect DECT base stations to a NeXspan 50.
LDS/LDT cards have T0/S0 interfaces for managing 2- or 4-channel DECT base stations. There
are two versions of each card:
• LDSA/LDTA: 8 T0/S0 interfaces
• LDSB/LDTB: 16 T0/S0 interfaces
LDSA/LDTA cards allow sixteen 2-channel DECT base stations to be connected, and LDSB/
LDTB cards eight 2-channel DECT base stations. 4-channel base stations can be connected by
adding one or two daughter cards: ADPCM32 (on LDS) and ADPCM32B (on LDT). An
ADPCM32/ADPCM32B card can manage eight 4-channel base stations.
Note:
The minimum technical state of the LDS card required to support an ADPCM32 card is:
HJ4094xN02
5.2 Configuring the LDS card
5.2.1 References and equipment
Table 1: References and equipment
Designation Reference
LDSA 16 T0/S0 interfaces for 2- or 4-channel DECT base stations HJ4094A
LDSB 8 T0/S0 interfaces for 2- or 4-channel DECT base stations HJ4094B
ADPCM32 Daughter card for managing 8 x 4-channel DECT base
stations
HJ4402A
AVADQ Synchronous bus link plug HR5124B
AVLDT Synchronous bus link plug HR5124C
PLDS 40 V/48 V remote power supply card HJ4206A
LDSA cable LDSA-distribution frame link cable HG4302A
LDSB cable LDSA-distribution frame link cable HG4302B
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